Develop Bugs

Bricked!fastboot works in cmd, no adb, recovery/bootloader menus

Would appreciate your help on the following issue (amoled display):
- phone doesnt boot up, it is stuck to a screen showing htc in the middle and 4 small triangles in the corners; if I unplug the pc cable it goes to a RUU menu
- no access to recovery or bootloader menus (by holding power + vol down/back)
- installing stock RUUs dont work; there is a 110 error saying that the RUU is not complete (tried 5-6 RUUs, both 2.1 and 2.2). there is a progress bar on the phone's screen that is normally green, but turns red when the radio is being written (as per the install wizard on the pc) and there is another triangle showing up at the end of the progress bar
- fastboot oem boot restarts the phone, but then it gets stuck to the white screen having htc in the middle (like when you start up the phone and after this quietly brilliant shows under htc, for me it doesnt go beyond this initial point)
- fastboot reboot-bootloader restarts the phone into the same 4triangles screen with htc in the middle
- adb doesnt work as it doesnt show my device
- any power + vol down/back combination brings the phone to the 4triangles screen
- if I run the stock RUU after fastboot oem boot (white screen with htc in the middle) there is a menu showing up on top of the white screen showing up the progress (1-bootloader, 2-radio_v2, 3-radio, then system, recovery, user data, etc.); bootloader is updated ok but then it gets stuck when updating radio_v2 and doesnt move further from that point)
- after the RUU install fails, I plug out the pc cable and see the RUU menu; depending on the RUU that I try to flash the hboot version changes up and even goes down after, but the firmware (what the RUU installer "sees" on the phone) and radio (seen on the RUU menu) remains the same: 1.21.405.1 and 4.06xx; the date on the RUU menu also changes depending on the RUU that I try to flash
Any suggestions to get my desire unbricked?
Bit of a background to the problem:
- rooted (unlockr) and was having Paul's r3 rom (2.1)
- updated the radio to 5.10xx
- got into silly restarts when using gps and thought to reflash a new rom and went for Paul's r8
- restarts were there also when using the phone normally
- thought to re-do all the rooting, wiping out everything from the phone, etc; so having r8 as the rom (pre-baked version) I started the rooting process with creating again the goldcard, etc etc
- error message at some point saying partition update fail (following the steps from theunlockr as I did the first time when rooting) and then the phone got to this triangles screen with htc in the middle
- strange though that this screen is different than the one when I first rooted when there was just one big triangle in the middle
Thanks a ton guys!

I've seen a few posts about this screen with the 4 triangles, but never seen the result of any potential fixes, or if it was ever actually fixed.
Just an idea, but it was maybe a bad radio flash if you are saying it started playing up after that? Unfortunately a bad radio flash is fairly terminal so I hope that's not your problem.
Good luck with this one and if you get it fixed then post the result here if you don't mind!

Will definitely post the solution when found; so far though nobody has any thoughts around what might be the reason behind this problem and how to get around it. I dropped a few PMs to the people that had this problem in the past and contacted Paul at Modaco, but so far no replies...

You can fix this with an RUU, I've had the same issue when I unplugged too early after flashing, but you are asking for help in the wrong section.

thought that the dev's section is where the best knowledge exists...
about the RUU process, I am trying to flash stock RUU.exe files, but there is a problem when the radio is being written and then I get a 110 error from the RUU install wizard saying that the RUU is incomplete.
for you the RUU install worked smoothly?

If you get a write error during an RUU flash (i.e. while the flashing is taking place, not before) it probably means there's a hardware fault.

Could be hardware, but I find it hard to believe as the phone is new and it is network locked, hence I didnt even use it for real, apart from some wifi and gps activities. Besides, the phone worked very well when I first rooted with Paul's r3 and the whole mess with restarts when using gps started after I upgraded the radio to 5.10xx having a 2.1 OS.
I feel that the problem started when I tried to root the phone being on Paul's r8 2.2 OS (tried to root with a 2.1 system and then it got messed up in the process).
I am not saying that it is not hardware as it is a possibility, but still think that it might be a messy software aspect, as if the radio is messed up from a hardware perspective, then at least the system should boot up and then wifi, gps, gsm and the things that are controlled by the radio shouldnt work...but somehow the OS should start-up.
Basically I dont get a write error, it's just that the error comes up when the radio is being written, hence I think that there is something wrong with the radio set-up that I have now on the phone...
Maybe somebody knows how to flash the system from scratch using only fastboot in cmd (having the right zip or img files properly signed), or maybe just the radio to start with.

This is not a Development question and thus should not be posted in the Development forum.
Thread reported.

have a look here. i do not know if it helps though. and i know it is not a Desire
http://forum.ppcgeeks.com/htc-hero/118035-error-110-ruu.html
i also found this. sounds familiar? not for desire but might do the trick http://forum.androidcentral.com/htc-hero-roms-hacks/13171-110-error-ruu-1-56-fix-100-unroot-too.html
sorry if i wasted your time.

acolwill said:
This is not a Development question and thus should not be posted in the Development forum.
Thread reported.
Click to expand...
Click to collapse
Well, I thought that as various solutions to root the phone, to get past different restrictions in the OS, etc. were discussed here, it might be a good thing to develop a way to bring back to life a OS being in this situation like mine...come on...

mariosraptor said:
have a look here. i do not know if it helps though. and i know it is not a Desire
http://forum.ppcgeeks.com/htc-hero/118035-error-110-ruu.html
i also found this. sounds familiar? not for desire but might do the trick http://forum.androidcentral.com/htc-hero-roms-hacks/13171-110-error-ruu-1-56-fix-100-unroot-too.html
sorry if i wasted your time.
Click to expand...
Click to collapse
Thanks anyways man, I looked at that already, but cant get it done as I dont have adb commands available in cmd, only fastboot. Dont worry about waisting my time, I really want that these days

I had the same problem. Passed the device in service center. Changed the motherboard under warranty. It took one month's time.

but to get adb you need to download and install android sdk. look here http://developer.android.com/sdk/index.html system dependands download.
install it here are instructions on how to use if you aren't familiar with.
http://www.londatiga.net/it/how-to-use-android-adb-command-line-tool/
for anything else just use google.
i'm pretty sure that your device is fixable and you can fix it without any service center. cheers and post what ever happens.
popepope said:
Thanks anyways man, I looked at that already, but cant get it done as I dont have adb commands available in cmd, only fastboot. Dont worry about waisting my time, I really want that these days
Click to expand...
Click to collapse

I know how to use adb commands...pretty new to android and everything, but lately I roamed a lot through various things about it and learned a lot.
The problem is that adb doesnt list my phone when I run adb devices, it shows only when I run fastboot devices, I am sure you know what I mean...hence I cannot push any files to the phone, etc., at least not using adb in cmd.
That's actually the problem, that I cannot get adb to work, I only have fastboot commands. At least the way I see it now the question is how can I work with the phone to fix it just by having fastboot access in cmd.
I searched quite a lot various forums, etc, but I never came across a solution that will get things going just by having fastboot in cmd (without adb working). Maybe somebody here will come up with some magic trick...

Nerten said:
I had the same problem. Passed the device in service center. Changed the motherboard under warranty. It took one month's time.
Click to expand...
Click to collapse
How did you end up having this problem, just like that or after some update, flash, etc?
Thanks!

have a look here mate http://forum.androidcentral.com/htc...9-bricked-my-evo-but-there-away-un-brick.html

same story unfortunately, doesnt apply to my problem. in the link they use a terminal emulator, but I cant use that as it doesnt work...it's basically an alternative to using adb directly in cmd, and this doesnt work for me.
if I am to get adb functionality back, then I'm done with the problem in 5 mins probably...
thanks anyways, keeping the hope alive!

sorry idf i don't underdstand, but if you have fastboot working in your device and sdcard also then you should be able to push files to device via fastboot making as clean installs as possible.so if your device is picked up by command line type fastboot to see command list. i'am a bit comfused. pretty sure you should fix it through fastboot though.
popepope said:
same story unfortunately, doesnt apply to my problem. in the link they use a terminal emulator, but I cant use that as it doesnt work...it's basically an alternative to using adb directly in cmd, and this doesnt work for me.
if I am to get adb functionality back, then I'm done with the problem in 5 mins probably...
thanks anyways, keeping the hope alive!
Click to expand...
Click to collapse

right, I can run 2 things with fastboot in cmd: (name of the files just an example)
1. fastboot update update.zip
here I get that the archive doesnt contain android-info.txt or android-product.txt
2. fastboot flash update.img
here i get signature verify fail
for example, fastboot erase radio says FAILED, remote: not allowed
there are some fastboot commands related to the kernel and some others, but dont know how to make use of them for my problem.
sd card is accesible for sure and it is a goldcard.
I saw some linux/ubuntu methods to simulate adb usage in cmd, but I dont think it will work...will try to find an ubuntu image and mount it under windows, but dont have time now...
anyways, thanks to everybody for the suggestions and interest, maybe we'll crack it some day

You need to use an official RUU zip image - i.e. a PB99IMG.zip. Not an update.zip.

Firmware updates seem to be write protected, Galaxy Tab 10.1 3G

Hi folks,
In my wife's Galaxy Tab 10.1 3G 64GB, firmware updates seem to be completely blocked.
I've tried every conceivable method described in this forum, but nothing seems to help.
I've tried to install CWM and CM using Odin (I laid off Heimdall, as it seemed to complex). The device is recognized, but the flashing is just standing, getting nowhere at all.
The same if I try using ADB, I can manipulate the file system within ordinary user limits (creating folders, renaming folders, moving them etc.), but as soon as I try to push a file to the device, the process is just waiting, and waiting, and...
If I set the device in recovery mode (PWR and Vol-, then Vol-, and Vol+), ADB tells me the device ID and recovery. But it refuses to accept any files.
Also nvflash doesn't help. Under Windows (PWR and Vol+), the device is recognized by the driver, but when I execute any nvflash command, it says "USB device not found". Under Linux, the device is also recognized as some nVidia device, but not possible to write anything, nor read anything.
My last resort is to try draining the battery, and then install a new official ROM again.
I'm completely out of ideas by now, and would very grateful for some useful tips how to unblock the device.
Best regards,
Peter

Just bad luck purchasing this product
Hi folks,
This tablet is driving me completely nuts . After spending several days plowing through forums and other sources, it's pretty clear why it's not possible to modify the tablet. My GT-P7500 G3 is a retail version and thus blocked against changes. With blocked I mean totally, utterly blocked.
There seems to be one single way to get low level access to the tab, and that's using nvflash with Samsung's SBK (secure-boot-key). Just imagine Samsung giving me access to that boot key. No way I'd say.
So, please, please, if somebody knows the secure boot key, or know how to create it, PM me. I would be really grateful.
This total block has got far reaching implications. Lots of applications requiring elevated access privileges don't install, or if they install, don't work. No backups, no recovery, no modyfing. My reason to get access to raw disk partitions is, that there was some glitch in the tab that destroyed all pictures, and all videos. If I can read the raw disk to a file, there's a pretty good chance that I can recover at least some of it.
I feel really cheated by Samsung blocking access to MY data this way.
So for you who are considering purchasing a Samsung product, have this in mind. Don't waste your time as I did.
Best regards,
Peter

Corrupted Device after downgrade attempt from 9.1 to 8.1

Hi, first time posting so I hope this is the right place to request help on this.
My device had some issues before attempting the downgrade, mainly it wasn't charging with the included cable/charger tried factory reset I could charge it with a Type A - Type C cable but super slowly, even from another charger (with the device still locked) 2 times but the issue wasn't solved. Figured it could be an issue with Android Pie saw reports of people with the same issue (and even the same solution - Type A cabe) so I decided the try a downgrade.
My bootloader version initially was TMZ20k, when I saw google's factory images page saying the unlock_critical was only needed for versions TMZ20a or bellow I skipped that version (didn't know there was downgrade protection for Pie), after many attempts I finally managed to get to the developer options to enable the OEM unlocking so then:
fastboot flashing unlock
downloaded the latest 8.1 (July) and unzipped the contents of the folder within into /platform-tools
flash-all
Problem is, don't know if this happened the first time also or just the last time I tried this (already tried multiple times at this point) but when it starts flashing the vendor.img the following occurs:
'Sending vendor_b' - 'FAILED (Write to device failed in SendBuffer() (unknown error))'
All other steps work normally
I also tried:
Flashing each image individually
Using another 8.1 Image
Use Recovery from bootloader after flashing the image
I could not:
Use another cable or port: Could only get my computer to recognize the device using the original cable and the single type C port I have on my computer
The result is the Corrupted Device screen is prompted and then it gets stuck on the G logo screen.
What should I try? Did I do anything wrong?
The only thing I can think of at this point would perhaps try to run this from another computer. Would that be recommended/required?
Sorry for the long post, just wanted to be as descriptive as I can

gfernandes92 said:
Hi, first time posting so I hope this is the right place to request help on this....
What should I try? Did I do anything wrong? The only thing I can think of at this point would perhaps try to run this from another computer. Would that be recommended/required?
Sorry for the long post, just wanted to be as descriptive as I can
Click to expand...
Click to collapse
I'll try to address a few points. One is that a downgrade is not going to solve your problem and Pie doesn't have a known charging problem. Some (read: a small number) have developed issues with the USB-C port. The issue manifests itself as not recognizing cables, transmission errors, or charging issues. Sometimes it just needs to be cleaned, and other times the port is bad. Inspect the port and clean if required. Second, you should have used BOTH unlock commands separately before starting. This forum is riddled with issues of half-unlocked phones. Everyone has a reason they don't want to unlock critical, but it is always that group that have issues. I suggest you try to get the phone fully unlocked and then flash the latest full (Pie) Google image and continue your diagnosis. Be very careful cleaning the port and inspect your cables. If you cannot flash completely through the full image with zero errors, yes you should try another computer. Lastly confirm your PC is using the latest (28.0.1 (September 2018) fastboot/adb binaries. If after wiping and installing a full image successfully you still have the original problem, it may end up being a hardware issue with the port which is repairable. Best of luck.

v12xke said:
I'll try to address a few points. One is that a downgrade is not going to solve your problem and Pie doesn't have a known charging problem. Some (read: a small number) have developed issues with the USB-C port. The issue manifests itself as not recognizing cables, transmission errors, or charging issues. Sometimes it just needs to be cleaned, and other times the port is bad. Inspect the port and clean if required. Second, you should have used BOTH unlock commands separately before starting. This forum is riddled with issues of half-unlocked phones. Everyone has a reason they don't want to unlock critical, but it is always that group that have issues. I suggest you try to get the phone fully unlocked and then flash the latest full (Pie) Google image and continue your diagnosis. Be very careful cleaning the port and inspect your cables. If you cannot flash completely through the full image with zero errors, yes you should try another computer. Lastly confirm your PC is using the latest (28.0.1 (September 2018) fastboot/adb binaries. If after wiping and installing a full image successfully you still have the original problem, it may end up being a hardware issue with the port which is repairable. Best of luck.
Click to expand...
Click to collapse
This post is golden!!

use Deuces script and flash the required factory image, solve most of the issues

Redmi Note 8 locked, need help with unlocking/backup

Hello!
I need help regarding a Redmi Note 8 that no longer accepts the correct pattern and is locked.
I'm looking for a solution that would allow me to either unlock my phone without data loss, or make a backup of the phone's internal storage on an sd card/pc before hard resetting.
The device is not rooted and I don't have custom recovery installed. USB Debugging is on, but my laptop is not authorized.
With Adb, the device is detected but unauthorized. It seems to be detected normally in fastboot mode. I was able to get my laptop to detect it in recovery mode by clicking on "Connect with MIAssistant" while it was plugged in, but only in sideload mode. I also somehow managed to get into safe mode, but I used the stock screen lock, so unless there's something else that can be done in that mode, it doesn't seem useful in this situation.
I tried the actual MIAssistant software but it tells me to update my device before connecting. From what I found, this is because it doesn't even work with phones running Android 6.0 Marshmallow or above, so that seems to be a dead-end, unfortunately. Downloaded from here, updated to version 3.2.1.3111. If there's a newer version that could support my device, even an untranslated one, I would love to know, but I couldn't find a working one.
I had some ideas that could potentially solve my problem, but couldn't find a way to actually execute them, so here they are in case someone out there who knows more than me could help me with one of them.
1, Is there any way I could authorize my laptop for USB Debugging without being able to accept the prompt on screen?
2, Is there a way to make a backup of the internal storage of my phone in fastboot/sideload mode?
3, Is there a way to get adb to detect this device normally in recovery mode, instead of in sideload mode?
4, Is there a way to get my device into mtp/ptp mode instead of charging mode when connected to a PC without USB Debugging so I can copy my files?
5, Here's a thread I found that seems promising, although it's old. Could I somehow use this, or a similar method on Redmi Note 8? The Recovery Mode is much more limiting on this device, unfortunately, so I can't exactly follow this tutorial. Are there alternatives that can be done in adb fastboot/sideload mode, perhaps?
6, If I am forced to hard reset, is there any software out there that could recover at least some of the deleted data afterwards, or is everything lost in case of a reset?
I am open to new ideas not listed above, as well. I am not a very advanced user so I probably missed some things.
Thank you so much for any answer in advance!

zoey_96 said:
Hello!
I need help regarding a Redmi Note 8 that no longer accepts the correct pattern and is locked.
Click to expand...
Click to collapse
do you have the default recovery ? or a custom one ?
zoey_96 said:
Is there any way I could authorize my laptop for USB Debugging without being able to accept the prompt on screen?
Click to expand...
Click to collapse
No

loopypalm said:
do you have the default recovery ? or a custom one ?
Click to expand...
Click to collapse
Default, which doesn't have many options on Xiaomi. :/
loopypalm said:
No
Click to expand...
Click to collapse
Sad to hear that. Are there any alternative options that could solve my problem? I'd really rather not factory reset.

zoey_96 said:
Default, which doesn't have many options on Xiaomi. :/
Click to expand...
Click to collapse
if you had twrp or similar your problem would be solved ...
zoey_96 said:
Are there any alternative options that could solve my problem?
Click to expand...
Click to collapse
not as far as i know, ask in ADB thread if you find any

Updated with extra info in case anyone else has any ideas.

Even if you can copy your files to PC, they are problably unusable because of encryption.
That is why you need that pattern
For security this is exactly what you want, if your phone is lost or stolen.

Elinx said:
Even if you can copy your files to PC, they are problably unusable because of encryption.
That is why you need that pattern
For security this is exactly what you want, if your phone is lost or stolen.
Click to expand...
Click to collapse
Do you mean that the reason it doesn't accept the correct pattern anymore is for security? I would have thought it would still accept the correct one, at least after several tries of the same thing. Being completely locked out even when you know the correct password is a little strange to me.

zoey_96 said:
Hello!
I need help regarding a Redmi Note 8 that no longer accepts the correct pattern and is locked.
I'm looking for a solution that would allow me to either unlock my phone without data loss, or make a backup of the phone's internal storage on an sd card/pc before hard resetting.
The device is not rooted and I don't have custom recovery installed. USB Debugging is on, but my laptop is not authorized.
With Adb, the device is detected but unauthorized. It seems to be detected normally in fastboot mode. I was able to get my laptop to detect it in recovery mode by clicking on "Connect with MIAssistant" while it was plugged in, but only in sideload mode. I also somehow managed to get into safe mode, but I used the stock screen lock, so unless there's something else that can be done in that mode, it doesn't seem useful in this situation.
I tried the actual MIAssistant software but it tells me to update my device before connecting. From what I found, this is because it doesn't even work with phones running Android 6.0 Marshmallow or above, so that seems to be a dead-end, unfortunately. Downloaded from here, updated to version 3.2.1.3111. If there's a newer version that could support my device, even an untranslated one, I would love to know, but I couldn't find a working one.
I had some ideas that could potentially solve my problem, but couldn't find a way to actually execute them, so here they are in case someone out there who knows more than me could help me with one of them.
1, Is there any way I could authorize my laptop for USB Debugging without being able to accept the prompt on screen?
2, Is there a way to make a backup of the internal storage of my phone in fastboot/sideload mode?
3, Is there a way to get adb to detect this device normally in recovery mode, instead of in sideload mode?
4, Is there a way to get my device into mtp/ptp mode instead of charging mode when connected to a PC without USB Debugging so I can copy my files?
5, Here's a thread I found that seems promising, although it's old. Could I somehow use this, or a similar method on Redmi Note 8? The Recovery Mode is much more limiting on this device, unfortunately, so I can't exactly follow this tutorial. Are there alternatives that can be done in adb fastboot/sideload mode, perhaps?
6, If I am forced to hard reset, is there any software out there that could recover at least some of the deleted data afterwards, or is everything lost in case of a reset?
I am open to new ideas not listed above, as well. I am not a very advanced user so I probably missed some things.
Thank you so much for any answer in advance!
Click to expand...
Click to collapse
Howdy bro (I also have a Xiaomi Redmi Note 8).
I've been almost two intense weeks reading and watching the XDA forum, trying somehow and I did not find the way to unlock it .... Besides that I have the Bootloader disabled it makes me more difficult, because for that I need to format my phone and is what I do not want .... Already today is my last day of searching and I think I will have to leave my memories behind and Format my cell phone.
I leave you a thread of a user that explains well the process of why you can not:
A Comprehensive Guide to getting Past the Android Pattern Lock Screen
So, here's the situation I’m in. Also I am 99% sure I got something wrong so please tell me. I’m past the pattern lock screen so ADB won’t directly work to unlock the lock screen. If I was at a pattern lock screen, I could use ADB to unlock the...
forum.xda-developers.com
and several more of the many threads that I searched, maybe it will help someone:
[Xiaomi] How to unlock phone after forgetting the password.
Hello, today it happened that I forgot a password to my phone. I've tried to restore it by logging in into my xiaomi account and my google account. Unfortunately it only offers to wipe my data, which I want to avoid at all costs. I have Poco F2...
forum.xda-developers.com
[Android][Guide]Hacking And Bypassing Android Password/Pattern/Face/PI
- DISCLAIMER - This Is For Educational Purposes Only You Shall Not Use This On Other People Phones Without Permission Under Any Circumstances I'm Not Responsible For Any Eventual Errors And Misbehaving Of Your Devices Files And Tutorials Are...
forum.xda-developers.com
[Android][Guide]Hacking And Bypassing Android Password/Pattern/Face/PI
- DISCLAIMER - This Is For Educational Purposes Only You Shall Not Use This On Other People Phones Without Permission Under Any Circumstances I'm Not Responsible For Any Eventual Errors And Misbehaving Of Your Devices Files And Tutorials Are...
forum.xda-developers.com
[GUIDE] Unlock bootloader without losing user data.
Hi, I am writing this guide because many people followed other guides in the forum and lost their data. This is the proper way of unlocking the bootloader without losing your data. 0 - Read the whole guide before proceeding and proceed at your...
forum.xda-developers.com
[GUIDE] Redmi K20 Pro - Unlock & Root Information, Links, Tools and Instructions
Like many, I was overwhelmed with information when trying to unlock, flash, and root my phone. After many failures, I decided to compile the good information all in one place. I hope this helps. If it does, please consider buying me a beer...
forum.xda-developers.com
Recovery without data loss
Hi Community, you are my last salvation. I am owner of Pixel 4a 5g since half a year and now it cannot boot anymore. I see only the google-"G" and the loading bar nothing else. I can start the Boatloader but before i do a factory reset i need to...
forum.xda-developers.com

My XZ1 compact story

So I bought a new phone since my old Onyx (One+ X) died (cracked screen and charging port is getting iffy). And finally I decided on this one, a cheap Chinese docomo branded one off Ebay.
I was so exited when it arrived, the UPS truck was at my gate when I got home that day, ready to leave, but the driver was nice enough to wait and give me my package then and there. Pheew.
Well, now to my, bootloader unlocking, recovery flashing, after market os installation and rooting story...
Bootloader:
The phone was supposed to be unlocked, and I guess that only meant SIM unlocked, because the service menu read "Bootloader unlock allowed: no". Damn.
A few Duckduckgo searches later, turned up I needed the "S!Unlock tool" which I found a copy off online, but username/password fields needed to be filled in, and I think I found a pirated s/n which didn't seem to work, (might have if I had tried harder).
But since it was just over £22 at https://networkunlocking.com/ I thought I could spare that on the off chance it worked. I was very surprised when it finally did, truth, I needed a few tries. And it actually did turn that service menu's pesky "no" to a thumbs-up "yes". Yay!
So now, pulling the cable, holding "volume up" and inserting cable for that blue light goodness, and running the "flashtool.exe -i 0x???? oem unlock bootloader 0x????????????" comand.
Not so fast, that doesnät work with newer flashtool versions...
Finding the old one from my Xperia Arc days and runnning it again, Yay!
(Wish I had read ahead and done that temporary root trick to rip my DRM codes off my phone first. But I don't plan to revert to stock, and I gather (might be wrong) that the DRM is only needed for stock roms, and not Lineage OS and such.)
Recovery (TWRP):
Now the problems start for real, getting into recovery was a **** and a half. Most guides for the phone says to push "volume up" multiple times during the boot-process. This turns out to be plain wrong. The actual button combo is holding "volume down" and "power" button together atleast until the screen goes blank after the unlocked bootloader warning.
Now, I wanted 17.1 on the phone and the recommended TWRp is 3.1.1 or something, and this works to install lineage fine, but don't forget to erase /data partition as I did. Stupid mistake that made wifi fail miserably, and probably a lot of other stuff, that I never tried before noticing my mistake.
However trying to get my own set of ringtones on the phone turned out to be another issue, going back into recovery when I noticed my ringtone.zip had failed. Obviously the media folder had moved since los 15.1,so no wonder right? Turns out it wasn't the only problem. TWRP 3.1.1 (or something) failed to unencrypt the root partition, so changing anything via recovery was a lie. fortunately the latest recovery, 3.5.2_9 did. So after installing that everything was rosy peaches.
Rooting:
SuperSU? forget it.
Magisk? yeah, but how? No really good step by step guide out there, except download from the github page, but what version?
A little trial and error, tried with the arm64 version and it turned out to be the right one. (Sometimes you just get it right on the first try...)
Renamed the apk to .zip put it on the phones memory, entered recovery and installed the zip, et voi effing la, Magisk root installed.
Root checker verifies root status, TitaniumBackup and RootExplorer works. Yes, my phone is playing ball.
Final notes:
This above looks simple right? In fact this was a two day process since the guides are surely lacking for this phone, a lot of trial and error, the greatesthurdle was getting into Recovery, until I found the right button combo I accidently managed to enter it once making me believe I had the right combo and something was wrong with the phone. 4 hours or so wasted trying different versions rebooting and flashing. Getting back my Viber messages turned out to be a problem to, TitaniumBackup got the messages back, but the db had references to my old images on my old phone, and probable pointed at the wrong directory so trying to send images either from gallery or take new photos crashed the app. Solution, backup the messages to my google account, uninstall and reinstall viber and restore from that backup. TitaniumBAckup is good but no magic bullet, it's a ***** that we have to rely on Google for backups though, I am allergic to the cloud, something about it makes my skin crawl.
Otherwise I like the phone, it says docomo on the back, something I can live with. The Chinese vendor even supplied one glass screen protector for the phone and a clear soft plastic case, in case I wanted some extra protection. I only wish there was a screen protector that had the same surface as the one that was on the phone in the box, that slightly opaque cloudy feel was so nice on my finger.
Can I recommend this phone? Nah, if noone writes a step by step guide that will cut down the time I spent on making this phone palpatable, I can't. But if you, like me, don't mind to tinker and don't want a phablet or spend way too much for the privilege to get a screen size you don't want, then sure. But why do we have to get them from China?

My trusty xz1 compact is slowly dieing on me and i am looking for a replacement how much did you pay for yours and is a really new or just refurbished ?

"Final notes:
This above looks simple right? In fact this was a two day process since the guides are surely lacking for this phone, a lot of trial and error, the greatesthurdle was getting into Recovery, until I found the right button combo I accidently managed to enter it once making me believe I had the right combo and something was wrong with the phone"
This Phone is in the mobile Sphere already ancient. Don't expect to get any help here or newer hot to guides.
my biggest problem is the fastboot recognition of my Windows. If this would work reliable i could better flash the phone but getting the right driver is a kind of roulette for this phone.

muhschaf said:
my biggest problem is the fastboot recognition of my Windows. If this would work reliable i could better flash the phone but getting the right driver is a kind of roulette for this phone.
Click to expand...
Click to collapse
Also had a non-connecting fastboot issue on Windows until I ran into this guide showing me it was not about a driver but an installation method:
How to install Sony Xperia Drivers Manually (Super Easy Guide)
Step-by-Step guidelines to install Sony Xperia Drivers Manually (this method can be used on Windows XP, Vista, Windows 7, Windows 8, 8.1 and Windows 10).
xperiausbdriver.com

4qx said:
Also had a non-connecting fastboot issue on Windows until I ran into this guide showing me it was not about a driver but an installation method:
How to install Sony Xperia Drivers Manually (Super Easy Guide)
Step-by-Step guidelines to install Sony Xperia Drivers Manually (this method can be used on Windows XP, Vista, Windows 7, Windows 8, 8.1 and Windows 10).
xperiausbdriver.com
Click to expand...
Click to collapse
Handy cannot boot now anyway so i would probably not able to recover anyway.

muhschaf said:
cannot boot now anyway so i would probably not able to recover anyway.
Click to expand...
Click to collapse
The phone completely refuses to boot?
Do you have recovery installed? If not, are you able to install it via fastboot on linux?

4qx said:
The phone completely refuses to boot?
Do you have recovery installed? If not, are you able to install it via fastboot on linux?
Click to expand...
Click to collapse
okay i will explain.
i had this common issue with this running out of internal space (13GB pictures i could not find, only 300MB left) and after looking into it i figured, that, due to my constant app installing and deinstalling, i had literrally thousends of little images (thumbnails, icons, you name it) that got not deintalled for whatever reason and clogged up my internal memory. So i made a Backup and decided to completly wipe and flash the newest lilac from Modpunk (18.1) and did a big Mistake here. i go into recovery and wiped EVERYTHING...without checking that recovery is untouched. then during the same session i installed the ROM and rebooted...so far all nice and dandy. Setting up the Phone, then get the newsest Gapps and then try to reboot into recovery to install them...well did i mentioned that i had wiped EVERYTHING? Well, there was no recovery anymore. Not my first rodeo i headbutt myself into the desk and spun up ADB/fastboot...only to run into the same problem i run everytime due to improper intalled driver i forgot already about. Longs story short: after some time handy refused to boot also into system.
Phone is now unbootable into any state, but Black screen fastboot over hardware buttons...
i COULD still try to make a blind fastboot flash after following the driver install instruction from above, but consider my lucky or clumsyness i will **** this up too and only waste time. and due to my current covid recovery i have not the energy nor the patient to diddle around with this sorry excuse of an absolute restrictive Phone and rather get me a S5 mini or something else that has no bootlock whatsoever and let you flash it from the very start.
i am plain running out of patient with sonys harassment.
/€: Also the constant "cannot get root" on a rooted phone is plain BS³. having permanent trouble to install adaway or use my sdcard proper is so friggin annoying that i now will search for a android version that got rid of this bull**** and will buy any phone that is suported by that ROM.
It is MY phone, and not Goolge nor the the phone company will dictade what i can or cannot install on it. i decide and i carry the risk, period. and the biggest security reason holds the phone anyway.

@muhschaf okay so it doesn't seem bricked. Pretty sure you just need to flash the recovery through fastboot and flash a ROM. Try that on Windows with the driver method; if that fails boot a Linux distro e.g. EndeavourOS, even from a USB without installing no adb/fastboot driver is necessary for Linux, it just works. You can do it.

4qx said:
@muhschaf okay so it doesn't seem bricked. Pretty sure you just need to flash the recovery through fastboot and flash a ROM. Try that on Windows with the driver method; if that fails boot a Linux distro e.g. EndeavourOS, even from a USB without installing no adb/fastboot driver is necessary for Linux, it just works. You can do it.
Click to expand...
Click to collapse
i known, the question is more "i really want that?" like i said i struggle with this phone ever since. and i realized yesterday the problem is not the phone itself, it's the bull**** of androids security architecture. Google seems to be very prone to make sure that they can shove any amount of advertisements down your throat. Given that they earn their money with ad network it doesn't surprise me.
i came to the conclusion that in reality i want to have a reliable way to install ad away on any given phone i own. i archive similar things on my desktop with Firefox and umatrix and ublock. And what can is say: Having Advertisment fee Internet is a bliss and i not care a bit about "but the free stuff" and i incrisingly fury about my inability to archive similar things on my phone i rely quite a bit.

@muhschaf I get it but you know what they say: good things require effort. But I find that once I set my Android up, I'm happy to have done it.
In regards to ads, you can actually install uBO on Android Firefox now, and many other addons also.

So i gave it a try again and the result was that it detects now a "?" under fastboot but ADB can't see anything failing sucsequently to flash recovery. i am also seemingly unable to get even into hardware fastboot anymore. But could be quite possible that the battery is already drained again. so i recharge it the night.
4qx: i was going away from uBO several years ago. Wonder that he has survived the drain after his "whitelist" decision, but it seems like.
Adaway block advertisement in apps and this is mainly the feature i wanted, see advertisment have gotten out of the browser itself into the Base/apps systems (Android, Windows) and therefore the Adblocker have to go with it. under windows i can control the System itself pretty easy and throughoutly with Powershell and package debloating scripts or regedit. under Android i haven't this option and have to rely on app like adaway. This shortcoming is pretty frustraing for an "Open Source" OS

After nearly a Year i stumble upon something windows related and now i have finally my xz1c back:
Windows USB Hubs of ANY kind (Monitor USB Hubs, Powers external USB Hubs, hell sometimes even the PCH, that is technical also a USB Hub), can and sometime WILL prevent proper lowlevel access to devices like...USB Headsets (Logitech Pro X) and Mobile Phones in fastboot mode (xz1c).
To circumvent this you have to connect the phone to a USB Port on the Back of your PC Motherboard DIRECTLY. every other Port can have an USB Hub in between that alters your write or readout and therefore failed the flashing.